diff --git a/nso-with-ansible/requirements.txt b/nso-with-ansible/requirements.txt
index 6a4b621..0838658 100644
--- a/nso-with-ansible/requirements.txt
+++ b/nso-with-ansible/requirements.txt
@@ -12,7 +12,7 @@ gunicorn==19.9.0
 idna==2.8
 itsdangerous==1.1.0
 Jinja2==2.10
-lxml==4.3.3
+lxml==4.9.1
 MarkupSafe==1.1.1
 paramiko==2.4.2
 pyasn1==0.4.5